git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/search.c

   1 /* search.c - search operation */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "back-bdb.h"
  23 #include "idl.h"
  24 #include "external.h"
  25
  26 static int base_candidate(
  27         BackendDB       *be,
  28         Entry   *e,
  29         ID              *ids );
  30
  31 static int search_candidates(
  32         Operation *stackop,     /* op with the current threadctx/slab cache */
  33         Operation *sop,         /* search op */
  34         SlapReply *rs,
  35         Entry *e,
  36         u_int32_t locker,
  37         ID      *ids,
  38         ID      *scopes );
  39
  40 static void send_paged_response(
  41         Operation *op,
  42         SlapReply *rs,
  43         ID  *lastid,
  44         int tentries );
  45
  46 /* Dereference aliases for a single alias entry. Return the final
  47  * dereferenced entry on success, NULL on any failure.
  48  */
  49 static Entry * deref_base (
  50         Operation *op,
  51         SlapReply *rs,
  52         Entry *e,
  53         Entry **matched,
  54         u_int32_t locker,
  55         DB_LOCK *lock,
  56         ID      *tmp,
  57         ID      *visited )
  58 {
  59         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  60         struct berval ndn;
  61         EntryInfo *ei;
  62         DB_LOCK lockr;
  63
  64         rs->sr_err = LDAP_ALIAS_DEREF_PROBLEM;
  65         rs->sr_text = "maximum deref depth exceeded";
  66
  67         while (BDB_IDL_N(tmp) < op->o_bd->be_max_deref_depth) {
  68                 /* Remember the last entry we looked at, so we can
  69                  * report broken links
  70                  */
  71                 *matched = e;
  72
  73                 /* If this is part of a subtree or onelevel search,
  74                  * have we seen this ID before? If so, quit.
  75                  */
  76                 if ( visited && bdb_idl_insert( visited, e->e_id ) ) {
  77                         e = NULL;
  78                         break;
  79                 }
  80
  81                 /* If we've seen this ID during this deref iteration,
  82                  * we've hit a loop.
  83                  */
  84                 if ( bdb_idl_insert( tmp, e->e_id ) ) {
  85                         rs->sr_err = LDAP_ALIAS_PROBLEM;
  86                         rs->sr_text = "circular alias";
  87                         e = NULL;
  88                         break;
  89                 }
  90
  91                 /* If there was a problem getting the aliasedObjectName,
  92                  * get_alias_dn will have set the error status.
  93                  */
  94                 if ( get_alias_dn(e, &ndn, &rs->sr_err, &rs->sr_text) ) {
  95                         e = NULL;
  96                         break;
  97                 }
  98
  99                 rs->sr_err = bdb_dn2entry( op, NULL, &ndn, &ei,
 100                         0, locker, &lockr );
 101
 102                 if ( ei ) {
 103                         e = ei->bei_e;
 104                 } else {
 105                         e = NULL;
 106                 }
 107
 108                 if (!e) {
 109                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 110                         rs->sr_text = "aliasedObject not found";
 111                         break;
 112                 }
 113
 114                 /* Free the previous entry, continue to work with the
 115                  * one we just retrieved.
 116                  */
 117                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 118                         *matched, lock);
 119                 *lock = lockr;
 120
 121                 /* We found a regular entry. Return this to the caller. The
 122                  * entry is still locked for Read.
 123                  */
 124                 if (!is_entry_alias(e)) {
 125                         rs->sr_err = LDAP_SUCCESS;
 126                         rs->sr_text = NULL;
 127                         break;
 128                 }
 129         }
 130         return e;
 131 }
 132
 133 /* Look for and dereference all aliases within the search scope. Adds
 134  * the dereferenced entries to the "ids" list. Requires "stack" to be
 135  * able to hold 8 levels of DB_SIZE IDLs. Of course we're hardcoded to
 136  * require a minimum of 8 UM_SIZE IDLs so this is never a problem.
 137  */
 138 static int search_aliases(
 139         Operation *op,
 140         SlapReply *rs,
 141         Entry *e,
 142         u_int32_t locker,
 143         ID *ids,
 144         ID *scopes,
 145         ID *stack )
 146 {
 147         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 148         ID *aliases, *curscop, *subscop, *visited, *newsubs, *oldsubs, *tmp;
 149         ID cursora, ida, cursoro, ido, *subscop2;
 150         Entry *matched, *a;
 151         EntryInfo *ei;
 152         struct berval bv_alias = BER_BVC( "alias" );
 153         AttributeAssertion aa_alias;
 154         Filter  af;
 155         DB_LOCK locka, lockr;
 156         int first = 1;
 157
 158         aliases = stack;        /* IDL of all aliases in the database */
 159         curscop = aliases + BDB_IDL_DB_SIZE;    /* Aliases in the current scope */
 160         subscop = curscop + BDB_IDL_DB_SIZE;    /* The current scope */
 161         visited = subscop + BDB_IDL_DB_SIZE;    /* IDs we've seen in this search */
 162         newsubs = visited + BDB_IDL_DB_SIZE;    /* New subtrees we've added */
 163         oldsubs = newsubs + BDB_IDL_DB_SIZE;    /* Subtrees added previously */
 164         tmp = oldsubs + BDB_IDL_DB_SIZE;        /* Scratch space for deref_base() */
 165
 166         /* A copy of subscop, because subscop gets clobbered by
 167          * the bdb_idl_union/intersection routines
 168          */
 169         subscop2 = tmp + BDB_IDL_DB_SIZE;
 170
 171         af.f_choice = LDAP_FILTER_EQUALITY;
 172         af.f_ava = &aa_alias;
 173         af.f_av_desc = slap_schema.si_ad_objectClass;
 174         af.f_av_value = bv_alias;
 175         af.f_next = NULL;
 176
 177         /* Find all aliases in database */
 178         BDB_IDL_ZERO( aliases );
 179         rs->sr_err = bdb_filter_candidates( op, &af, aliases,
 180                 curscop, visited );
 181         if (rs->sr_err != LDAP_SUCCESS) {
 182                 return rs->sr_err;
 183         }
 184         oldsubs[0] = 1;
 185         oldsubs[1] = e->e_id;
 186
 187         BDB_IDL_ZERO( ids );
 188         BDB_IDL_ZERO( visited );
 189         BDB_IDL_ZERO( newsubs );
 190
 191         cursoro = 0;
 192         ido = bdb_idl_first( oldsubs, &cursoro );
 193
 194         for (;;) {
 195                 /* Set curscop to only the aliases in the current scope. Start with
 196                  * all the aliases, obtain the IDL for the current scope, and then
 197                  * get the intersection of these two IDLs. Add the current scope
 198                  * to the cumulative list of candidates.
 199                  */
 200                 BDB_IDL_CPY( curscop, aliases );
 201                 rs->sr_err = bdb_dn2idl( op, e, subscop,
 202                         subscop2+BDB_IDL_DB_SIZE );
 203                 if (first) {
 204                         first = 0;
 205                 } else {
 206                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &locka);
 207                 }
 208                 BDB_IDL_CPY(subscop2, subscop);
 209                 rs->sr_err = bdb_idl_intersection(curscop, subscop);
 210                 bdb_idl_union( ids, subscop2 );
 211
 212                 /* Dereference all of the aliases in the current scope. */
 213                 cursora = 0;
 214                 for (ida = bdb_idl_first(curscop, &cursora); ida != NOID;
 215                         ida = bdb_idl_next(curscop, &cursora))
 216                 {
 217                         ei = NULL;
 218 retry1:
 219                         rs->sr_err = bdb_cache_find_id(op, NULL,
 220                                 ida, &ei, 0, locker, &lockr );
 221                         if (rs->sr_err != LDAP_SUCCESS) {
 222                                 if ( rs->sr_err == DB_LOCK_DEADLOCK ||
 223                                         rs->sr_err == DB_LOCK_NOTGRANTED ) goto retry1;
 224                                 continue;
 225                         }
 226                         a = ei->bei_e;
 227
 228                         /* This should only happen if the curscop IDL has maxed out and
 229                          * turned into a range that spans IDs indiscriminately
 230                          */
 231                         if (!is_entry_alias(a)) {
 232                                 bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache,
 233                                         a, &lockr);
 234                                 continue;
 235                         }
 236
 237                         /* Actually dereference the alias */
 238                         BDB_IDL_ZERO(tmp);
 239                         a = deref_base( op, rs, a, &matched, locker, &lockr,
 240                                 tmp, visited );
 241                         if (a) {
 242                                 /* If the target was not already in our current candidates,
 243                                  * make note of it in the newsubs list. Also
 244                                  * set it in the scopes list so that bdb_search
 245                                  * can check it.
 246                                  */
 247                                 if (bdb_idl_insert(ids, a->e_id) == 0) {
 248                                         bdb_idl_insert(newsubs, a->e_id);
 249                                         bdb_idl_insert(scopes, a->e_id);
 250                                 }
 251                                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 252                                         a, &lockr);
 253
 254                         } else if (matched) {
 255                                 /* Alias could not be dereferenced, or it deref'd to
 256                                  * an ID we've already seen. Ignore it.
 257                                  */
 258                                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 259                                         matched, &lockr );
 260                                 rs->sr_text = NULL;
 261                         }
 262                 }
 263                 /* If this is a OneLevel search, we're done; oldsubs only had one
 264                  * ID in it. For a Subtree search, oldsubs may be a list of scope IDs.
 265                  */
 266                 if ( op->ors_scope == LDAP_SCOPE_ONELEVEL ) break;
 267 nextido:
 268                 ido = bdb_idl_next( oldsubs, &cursoro );
 269
 270                 /* If we're done processing the old scopes, did we add any new
 271                  * scopes in this iteration? If so, go back and do those now.
 272                  */
 273                 if (ido == NOID) {
 274                         if (BDB_IDL_IS_ZERO(newsubs)) break;
 275                         BDB_IDL_CPY(oldsubs, newsubs);
 276                         BDB_IDL_ZERO(newsubs);
 277                         cursoro = 0;
 278                         ido = bdb_idl_first( oldsubs, &cursoro );
 279                 }
 280
 281                 /* Find the entry corresponding to the next scope. If it can't
 282                  * be found, ignore it and move on. This should never happen;
 283                  * we should never see the ID of an entry that doesn't exist.
 284                  * Set the name so that the scope's IDL can be retrieved.
 285                  */
 286                 ei = NULL;
 287 sameido:
 288                 rs->sr_err = bdb_cache_find_id(op, NULL, ido, &ei,
 289                         0, locker, &locka );
 290                 if ( rs->sr_err != LDAP_SUCCESS ) {
 291                         if ( rs->sr_err == DB_LOCK_DEADLOCK ||
 292                                 rs->sr_err == DB_LOCK_NOTGRANTED )
 293                                 goto sameido;
 294                         goto nextido;
 295                 }
 296                 e = ei->bei_e;
 297         }
 298         return rs->sr_err;
 299 }
 300
 301 #define is_sync_protocol(op)    \
 302         ((op)->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST)
 303
 304 #define IS_BDB_REPLACE(type) (( type == LDAP_PSEARCH_BY_DELETE ) || \
 305         ( type == LDAP_PSEARCH_BY_SCOPEOUT ))
 306 #define IS_PSEARCH (op != sop)
 307
 308 static Operation *
 309 bdb_drop_psearch( Operation *op, ber_int_t msgid, int lock )
 310 {
 311         Operation       *ps_list;
 312         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 313
 314         LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 315                 if ( ps_list->o_connid == op->o_connid ) {
 316                         if ( ps_list->o_msgid == msgid ) {
 317                                 ps_list->o_abandon = 1;
 318                                 LDAP_LIST_REMOVE( ps_list, o_ps_link );
 319                                 if ( lock )
 320                                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 321                                 LDAP_STAILQ_REMOVE( &op->o_conn->c_ops, ps_list,
 322                                         slap_op, o_next );
 323                                 LDAP_STAILQ_NEXT( ps_list, o_next ) = NULL;
 324                                 op->o_conn->c_n_ops_executing--;
 325                                 op->o_conn->c_n_ops_completed++;
 326                                 if ( lock )
 327                                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 328                                 return ps_list;
 329                         }
 330                 }
 331         }
 332
 333         return NULL;
 334 }
 335
 336 int
 337 bdb_abandon( Operation *op, SlapReply *rs )
 338 {
 339         Operation       *ps;
 340         void            *saved_tmpmemctx;
 341
 342         ps = bdb_drop_psearch( op, op->oq_abandon.rs_msgid, (op->o_tag != LDAP_REQ_ABANDON) );
 343         if ( ps ) {
 344                 if ( ps->o_savmemctx ) {
 345                         ps->o_tmpmemctx = ps->o_savmemctx;
 346                         ps->o_tmpmfuncs = &sl_mfuncs;
 347                         ber_set_option(ps->o_ber, LBER_OPT_BER_MEMCTX, &ps->o_savmemctx);
 348                 }
 349                 saved_tmpmemctx = ps->o_tmpmemctx;
 350                 if ( op->o_tag != LDAP_REQ_ABANDON ) {
 351                         rs->sr_err = LDAP_CANCELLED;
 352                         send_ldap_result( ps, rs );
 353                 }
 354
 355                 if (!BER_BVISNULL(&ps->o_req_dn)) {
 356                         slap_sl_free( ps->o_req_dn.bv_val, ps->o_tmpmemctx );
 357                 }
 358                 if (!BER_BVISNULL(&ps->o_req_ndn)) {
 359                         slap_sl_free( ps->o_req_ndn.bv_val, ps->o_tmpmemctx );
 360                 }
 361                 if (!BER_BVISNULL(&ps->ors_filterstr)) {
 362                         ps->o_tmpfree(ps->ors_filterstr.bv_val, ps->o_tmpmemctx);
 363                 }
 364                 if (ps->ors_filter != NULL) {
 365                         filter_free_x(ps, ps->ors_filter);
 366                 }
 367                 if (ps->ors_attrs != NULL) {
 368                         ps->o_tmpfree(ps->ors_attrs, ps->o_tmpmemctx);
 369                 }
 370
 371                 slap_op_free ( ps );
 372
 373                 if ( saved_tmpmemctx ) {
 374                         sl_mem_destroy( NULL, saved_tmpmemctx );
 375                 }
 376
 377                 return LDAP_SUCCESS;
 378         }
 379         return LDAP_UNAVAILABLE;
 380 }
 381
 382 int bdb_search( Operation *op, SlapReply *rs )
 383 {
 384         return bdb_do_search( op, rs, op, NULL, 0 );
 385 }
 386
 387 int bdb_psearch( Operation *op, SlapReply *rs, Operation *sop,
 388         Entry *ps_e, int ps_type )
 389 {
 390         int     rc;
 391
 392         rc = bdb_do_search( op, rs, sop, ps_e, ps_type );
 393         return rc;
 394 }
 395
 396 /* For persistent searches, op is the currently executing operation,
 397  * sop is the persistent search. For regular searches, sop = op.
 398  */
 399 int
 400 bdb_do_search( Operation *op, SlapReply *rs, Operation *sop,
 401         Entry *ps_e, int ps_type )
 402 {
 403         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 404         time_t          stoptime;
 405         ID              id, cursor;
 406         ID              candidates[BDB_IDL_UM_SIZE];
 407         ID              scopes[BDB_IDL_DB_SIZE];
 408         Entry           *e = NULL, base, e_root = {0};
 409         Entry           *matched = NULL;
 410         EntryInfo       *ei, ei_root = {0};
 411         struct berval   realbase = BER_BVNULL;
 412         int             manageDSAit;
 413         int             tentries = 0;
 414         ID              lastid = NOID;
 415         AttributeName   *attrs;
 416
 417         Filter          contextcsnand, contextcsnle, cookief, csnfnot,
 418                         csnfeq, csnfand, csnfge;
 419         AttributeAssertion aa_ge, aa_eq, aa_le;
 420         struct berval   *search_context_csn = NULL;
 421         DB_LOCK         ctxcsn_lock;
 422         LDAPControl     *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 423         int             num_ctrls = 0;
 424         AttributeName   uuid_attr[2];
 425         int             rc_sync = 0;
 426         int             entry_sync_state = -1;
 427         AttributeName   null_attr;
 428         int             no_sync_state_change = 0;
 429
 430         u_int32_t       locker = 0;
 431         DB_LOCK         lock;
 432
 433         Operation       *ps_list;
 434         int                     sync_send_present_mode = 1;
 435         int                     match;
 436         MatchingRule *mr;
 437         const char *text;
 438         int                     slog_found = 0;
 439
 440         BerVarray       syncUUID_set = NULL;
 441         int                     syncUUID_set_cnt = 0;
 442
 443         struct  bdb_op_info     *opinfo = NULL;
 444         DB_TXN                  *ltid = NULL;
 445
 446         void *memctx_null = NULL;
 447
 448         Debug( LDAP_DEBUG_TRACE, "=> " LDAP_XSTRING(bdb_search) "\n", 0, 0, 0);
 449         attrs = sop->oq_search.rs_attrs;
 450
 451         opinfo = (struct bdb_op_info *) op->o_private;
 452
 453         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST ) {
 454                 struct slap_session_entry *sent;
 455                 if ( sop->o_sync_state.sid >= 0 ) {
 456                         LDAP_LIST_FOREACH( sent, &bdb->bi_session_list, se_link ) {
 457                                 if ( sent->se_id == sop->o_sync_state.sid ) {
 458                                         sop->o_sync_slog_size = sent->se_size;
 459                                         break;
 460                                 }
 461                         }
 462                 }
 463         }
 464
 465         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_PERSIST ) {
 466                 if ( sop->o_tmpmemctx ) {
 467                         sop->o_savmemctx = sop->o_tmpmemctx;
 468                         sop->o_tmpmemctx = NULL;
 469                         sop->o_tmpmfuncs = &ch_mfuncs;
 470                         ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
 471                 }
 472         }
 473
 474         /* psearch needs to be registered before refresh begins */
 475         /* psearch and refresh transmission is serialized in send_ldap_ber() */
 476         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_PERSIST ) {
 477                 ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 478                 LDAP_LIST_INSERT_HEAD( &bdb->bi_psearch_list, sop, o_ps_link );
 479                 ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 480
 481         } else if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST
 482                 && sop->o_sync_slog_size >= 0 )
 483         {
 484                 ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 485                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 486                         if ( ps_list->o_sync_slog_size >= 0 ) {
 487                                 if ( ps_list->o_sync_state.sid == sop->o_sync_state.sid ) {
 488                                         slog_found = 1;
 489                                         break;
 490                                 }
 491                         }
 492                 }
 493
 494                 if ( slog_found ) {
 495                         if ( ps_list->o_sync_slog_omitcsn.bv_len != 0 ) {
 496                                 mr = slap_schema.si_ad_entryCSN->ad_type->sat_ordering;
 497                                 if ( sop->o_sync_state.ctxcsn &&
 498                                         sop->o_sync_state.ctxcsn->bv_val != NULL )
 499                                 {
 500                                         value_match( &match, slap_schema.si_ad_entryCSN, mr,
 501                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 502                                                 sop->o_sync_state.ctxcsn,
 503                                                 &ps_list->o_sync_slog_omitcsn,
 504                                                 &text );
 505                                 } else {
 506                                         match = -1;
 507                                 }
 508                                 if ( match >= 0 ) {
 509                                         sync_send_present_mode = 0;
 510                                 }
 511                         } else {
 512                                 sync_send_present_mode = 0;
 513                         }
 514                 } else if ( sop->o_sync_slog_size >= 0 ) {
 515                         LDAP_LIST_INSERT_HEAD( &bdb->bi_psearch_list, sop, o_ps_link );
 516                 } else {
 517                         sop->o_sync_state.sid = -1;
 518                 }
 519                 ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 520         }
 521
 522         null_attr.an_desc = NULL;
 523         null_attr.an_oc = NULL;
 524         null_attr.an_oc_exclude = 0;
 525         BER_BVZERO( &null_attr.an_name );
 526
 527         for( num_ctrls = 0; num_ctrls < SLAP_MAX_RESPONSE_CONTROLS; num_ctrls++ ) {
 528                 ctrls[num_ctrls] = NULL;
 529         }
 530         num_ctrls = 0;
 531
 532         if ( IS_PSEARCH && IS_BDB_REPLACE(ps_type)) {
 533                 attrs = uuid_attr;
 534                 attrs[0].an_desc = NULL;
 535                 attrs[0].an_oc = NULL;
 536                 attrs[0].an_oc_exclude = 0;
 537                 BER_BVZERO( &attrs[0].an_name );
 538         }
 539
 540         manageDSAit = get_manageDSAit( sop );
 541
 542         /* Sync control overrides manageDSAit */
 543         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
 544                 if ( manageDSAit == SLAP_NO_CONTROL ) {
 545                         manageDSAit = SLAP_CRITICAL_CONTROL;
 546                 }
 547         } else if ( IS_PSEARCH ) {
 548                 if ( manageDSAit == SLAP_NO_CONTROL ) {
 549                         manageDSAit = SLAP_CRITICAL_CONTROL;
 550                 }
 551         }
 552
 553         if ( opinfo && opinfo->boi_txn ) {
 554                 ltid = opinfo->boi_txn;
 555                 locker = TXN_ID( ltid );
 556         } else {
 557                 rs->sr_err = LOCK_ID( bdb->bi_dbenv, &locker );
 558
 559                 switch(rs->sr_err) {
 560                 case 0:
 561                         break;
 562                 default:
 563                         send_ldap_error( sop, rs, LDAP_OTHER, "internal error" );
 564                         return rs->sr_err;
 565                 }
 566         }
 567
 568         if ( sop->o_req_ndn.bv_len == 0 ) {
 569                 /* DIT root special case */
 570                 ei_root.bei_e = &e_root;
 571                 ei_root.bei_parent = &ei_root;
 572                 e_root.e_private = &ei_root;
 573                 e_root.e_id = 0;
 574                 BER_BVSTR( &e_root.e_nname, "" );
 575                 BER_BVSTR( &e_root.e_name, "" );
 576                 ei = &ei_root;
 577                 rs->sr_err = LDAP_SUCCESS;
 578         } else {
 579 dn2entry_retry:
 580                 /* get entry with reader lock */
 581                 rs->sr_err = bdb_dn2entry( op, ltid, &sop->o_req_ndn, &ei,
 582                         1, locker, &lock );
 583         }
 584
 585         switch(rs->sr_err) {
 586         case DB_NOTFOUND:
 587                 matched = ei->bei_e;
 588                 break;
 589         case 0:
 590                 e = ei->bei_e;
 591                 break;
 592         case LDAP_BUSY:
 593                 send_ldap_error( sop, rs, LDAP_BUSY, "ldap server busy" );
 594                 if ( !opinfo )
 595                         LOCK_ID_FREE (bdb->bi_dbenv, locker );
 596                 return LDAP_BUSY;
 597         case DB_LOCK_DEADLOCK:
 598         case DB_LOCK_NOTGRANTED:
 599                 goto dn2entry_retry;
 600         default:
 601                 send_ldap_error( sop, rs, LDAP_OTHER, "internal error" );
 602                 if ( !opinfo )
 603                         LOCK_ID_FREE (bdb->bi_dbenv, locker );
 604                 return rs->sr_err;
 605         }
 606
 607         if ( e && (op->ors_deref & LDAP_DEREF_FINDING) && is_entry_alias(e) ) {
 608                 BDB_IDL_ZERO(candidates);
 609                 e = deref_base( op, rs, e, &matched, locker, &lock,
 610                         candidates, NULL );
 611         }
 612
 613         if ( e == NULL ) {
 614                 struct berval matched_dn = BER_BVNULL;
 615
 616                 if ( matched != NULL ) {
 617                         BerVarray erefs;
 618                         ber_dupbv( &matched_dn, &matched->e_name );
 619
 620                         erefs = is_entry_referral( matched )
 621                                 ? get_entry_referrals( op, matched )
 622                                 : NULL;
 623
 624                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache,
 625                                 matched, &lock);
 626                         matched = NULL;
 627
 628                         if( erefs ) {
 629                                 rs->sr_ref = referral_rewrite( erefs, &matched_dn,
 630                                         &sop->o_req_dn, sop->oq_search.rs_scope );
 631                                 ber_bvarray_free( erefs );
 632                         }
 633
 634                 } else {
 635                         rs->sr_ref = referral_rewrite( default_referral,
 636                                 NULL, &sop->o_req_dn, sop->oq_search.rs_scope );
 637                 }
 638
 639                 rs->sr_err = LDAP_REFERRAL;
 640                 rs->sr_matched = matched_dn.bv_val;
 641                 send_ldap_result( sop, rs );
 642
 643                 if ( !opinfo )
 644                         LOCK_ID_FREE (bdb->bi_dbenv, locker );
 645                 if ( rs->sr_ref ) {
 646                         ber_bvarray_free( rs->sr_ref );
 647                         rs->sr_ref = NULL;
 648                 }
 649                 if ( matched_dn.bv_val ) {
 650                         ber_memfree( matched_dn.bv_val );
 651                         rs->sr_matched = NULL;
 652                 }
 653                 return rs->sr_err;
 654         }
 655
 656         if ( !manageDSAit && e != &e_root && is_entry_referral( e ) ) {
 657                 /* entry is a referral, don't allow add */
 658                 struct berval matched_dn;
 659                 BerVarray erefs;
 660
 661                 ber_dupbv( &matched_dn, &e->e_name );
 662                 erefs = get_entry_referrals( op, e );
 663
 664                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
 665                 e = NULL;
 666
 667                 if( erefs ) {
 668                         rs->sr_ref = referral_rewrite( erefs, &matched_dn,
 669                                 &sop->o_req_dn, sop->oq_search.rs_scope );
 670                         ber_bvarray_free( erefs );
 671                 }
 672
 673                 Debug( LDAP_DEBUG_TRACE,
 674                         LDAP_XSTRING(bdb_search) ": entry is referral\n",
 675                         0, 0, 0 );
 676
 677                 if (!rs->sr_ref) rs->sr_text = "bad_referral object";
 678                 rs->sr_err = LDAP_REFERRAL;
 679                 rs->sr_matched = matched_dn.bv_val;
 680                 send_ldap_result( sop, rs );
 681
 682                 if ( !opinfo )
 683                         LOCK_ID_FREE (bdb->bi_dbenv, locker );
 684                 ber_bvarray_free( rs->sr_ref );
 685                 rs->sr_ref = NULL;
 686                 ber_memfree( matched_dn.bv_val );
 687                 rs->sr_matched = NULL;
 688                 return 1;
 689         }
 690
 691         if ( get_assert( op ) &&
 692                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 693         {
 694                 rs->sr_err = LDAP_ASSERTION_FAILED;
 695                 send_ldap_result( sop, rs );
 696                 return 1;
 697         }
 698
 699         /* compute it anyway; root does not use it */
 700         stoptime = op->o_time + sop->ors_tlimit;
 701
 702         /* need normalized dn below */
 703         ber_dupbv( &realbase, &e->e_nname );
 704
 705         /* Copy info to base, must free entry before accessing the database
 706          * in search_candidates, to avoid deadlocks.
 707          */
 708         base.e_private = e->e_private;
 709         base.e_nname = realbase;
 710         base.e_id = e->e_id;
 711
 712         if ( e != &e_root ) {
 713                 bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 714         }
 715         e = NULL;
 716
 717         if ( !IS_PSEARCH ) {
 718                 rs->sr_err = bdb_get_commit_csn( sop, rs, &search_context_csn,
 719                         locker, &ctxcsn_lock );
 720
 721                 if ( rs->sr_err != LDAP_SUCCESS ) {
 722                         send_ldap_error( sop, rs, rs->sr_err,
 723                                 "error in csn management in search" );
 724                         goto done;
 725                 }
 726
 727                 if ( sop->o_sync_mode != SLAP_SYNC_NONE &&
 728                         sop->o_sync_state.ctxcsn &&
 729                         sop->o_sync_state.ctxcsn->bv_val &&
 730                         ber_bvcmp( &sop->o_sync_state.ctxcsn[0], search_context_csn ) == 0 )
 731                 {
 732                         bdb_cache_entry_db_unlock( bdb->bi_dbenv, &ctxcsn_lock );
 733                         goto nochange;
 734                 }
 735         } else {
 736                 search_context_csn = ber_dupbv( NULL, &op->o_sync_csn );
 737         }
 738
 739         /* select candidates */
 740         if ( sop->oq_search.rs_scope == LDAP_SCOPE_BASE ) {
 741                 rs->sr_err = base_candidate( op->o_bd, &base, candidates );
 742
 743         } else {
 744                 BDB_IDL_ZERO( candidates );
 745                 BDB_IDL_ZERO( scopes );
 746                 rs->sr_err = search_candidates( op, sop, rs, &base,
 747                         locker, candidates, scopes );
 748         }
 749
 750         if ( !IS_PSEARCH && sop->o_sync_mode != SLAP_SYNC_NONE ) {
 751                 bdb_cache_entry_db_unlock( bdb->bi_dbenv, &ctxcsn_lock );
 752         }
 753
 754         /* start cursor at beginning of candidates.
 755          */
 756         cursor = 0;
 757         if (IS_PSEARCH) {
 758                 if ( !BDB_IDL_IS_RANGE( candidates ) ) {
 759                         cursor = bdb_idl_search( candidates, ps_e->e_id );
 760                         if ( candidates[cursor] != ps_e->e_id ) {
 761                                 rs->sr_err = LDAP_SUCCESS;
 762                                 goto done;
 763                         }
 764                 } else if ( ps_e->e_id < BDB_IDL_RANGE_FIRST( candidates ) ||
 765                         ps_e->e_id > BDB_IDL_RANGE_LAST( candidates ))
 766                 {
 767                         rs->sr_err = LDAP_SUCCESS;
 768                         goto done;
 769                 }
 770                 candidates[0] = 1;
 771                 candidates[1] = ps_e->e_id;
 772         }
 773
 774         if ( candidates[0] == 0 ) {
 775                 Debug( LDAP_DEBUG_TRACE,
 776                         LDAP_XSTRING(bdb_search) ": no candidates\n",
 777                         0, 0, 0 );
 778
 779                 goto nochange;
 780         }
 781
 782         /* if not root and candidates exceed to-be-checked entries, abort */
 783         if ( sop->ors_limit     /* isroot == TRUE */ &&
 784                 sop->ors_limit->lms_s_unchecked != -1 &&
 785                 BDB_IDL_N(candidates) > (unsigned) sop->ors_limit->lms_s_unchecked )
 786         {
 787                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 788                 send_ldap_result( sop, rs );
 789                 rs->sr_err = LDAP_SUCCESS;
 790                 goto done;
 791         }
 792
 793         if ( sop->ors_limit == NULL     /* isroot == FALSE */ ||
 794                 !sop->ors_limit->lms_s_pr_hide )
 795         {
 796                 tentries = BDB_IDL_N(candidates);
 797         }
 798
 799         if ( get_pagedresults(sop) > SLAP_NO_CONTROL ) {
 800                 if ( (ID)( sop->o_pagedresults_state.ps_cookie ) == 0 ) {
 801                         id = bdb_idl_first( candidates, &cursor );
 802
 803                 } else {
 804                         if ( sop->o_pagedresults_size == 0 ) {
 805                                 rs->sr_err = LDAP_SUCCESS;
 806                                 rs->sr_text = "search abandoned by pagedResult size=0";
 807                                 send_ldap_result( sop, rs );
 808                                 goto done;
 809                         }
 810                         for ( id = bdb_idl_first( candidates, &cursor );
 811                                 id != NOID &&
 812                                         id <= (ID)( sop->o_pagedresults_state.ps_cookie );
 813                                 id = bdb_idl_next( candidates, &cursor ) )
 814                         {
 815                                 /* empty */;
 816                         }
 817                 }
 818
 819                 if ( cursor == NOID ) {
 820                         Debug( LDAP_DEBUG_TRACE,
 821                                 LDAP_XSTRING(bdb_search)
 822                                 ": no paged results candidates\n",
 823                                 0, 0, 0 );
 824                         send_paged_response( sop, rs, &lastid, 0 );
 825
 826                         rs->sr_err = LDAP_OTHER;
 827                         goto done;
 828                 }
 829                 goto loop_begin;
 830         }
 831
 832         if (( sop->o_sync_mode & SLAP_SYNC_REFRESH ) || IS_PSEARCH ) {
 833                 int match;
 834
 835                 cookief.f_choice = LDAP_FILTER_AND;
 836                 cookief.f_and = &csnfnot;
 837                 cookief.f_next = NULL;
 838
 839                 csnfnot.f_choice = LDAP_FILTER_NOT;
 840                 csnfnot.f_not = &csnfeq;
 841                 csnfnot.f_next = &csnfand;
 842
 843                 csnfeq.f_choice = LDAP_FILTER_EQUALITY;
 844                 csnfeq.f_ava = &aa_eq;
 845                 csnfeq.f_av_desc = slap_schema.si_ad_entryCSN;
 846                 if ( sop->o_sync_state.ctxcsn != NULL ) {
 847                         csnfeq.f_av_value = *sop->o_sync_state.ctxcsn;
 848                 } else {
 849                         csnfeq.f_av_value = slap_empty_bv;
 850                 }
 851
 852                 csnfand.f_choice = LDAP_FILTER_AND;
 853                 csnfand.f_and = &csnfge;
 854                 csnfand.f_next = NULL;
 855
 856                 csnfge.f_choice = LDAP_FILTER_GE;
 857                 csnfge.f_ava = &aa_ge;
 858                 csnfge.f_av_desc = slap_schema.si_ad_entryCSN;
 859                 if ( sop->o_sync_state.ctxcsn != NULL ) {
 860                         csnfge.f_av_value = *sop->o_sync_state.ctxcsn;
 861                 } else {
 862                         csnfge.f_av_value = slap_empty_bv;
 863                 }
 864
 865                 if ( search_context_csn && !IS_PSEARCH ) {
 866                         csnfge.f_next = &contextcsnand;
 867
 868                         contextcsnand.f_choice = LDAP_FILTER_AND;
 869                         contextcsnand.f_and = &contextcsnle;
 870                         contextcsnand.f_next = NULL;
 871
 872                         contextcsnle.f_choice = LDAP_FILTER_LE;
 873                         contextcsnle.f_ava = &aa_le;
 874                         contextcsnle.f_av_desc = slap_schema.si_ad_entryCSN;
 875                         contextcsnle.f_av_value = *search_context_csn;
 876                         contextcsnle.f_next = sop->oq_search.rs_filter;
 877
 878                         mr = slap_schema.si_ad_entryCSN->ad_type->sat_ordering;
 879                         if ( sop->o_sync_state.ctxcsn &&
 880                                 sop->o_sync_state.ctxcsn->bv_val != NULL )
 881                         {
 882                                 value_match( &match, slap_schema.si_ad_entryCSN, mr,
 883                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 884                                                 &sop->o_sync_state.ctxcsn[0], search_context_csn,
 885                                                 &text );
 886                         } else {
 887                                 match = -1;
 888                         }
 889                         no_sync_state_change = ( match >= 0 );
 890                 } else {
 891                         csnfge.f_next = sop->oq_search.rs_filter;
 892                 }
 893         }
 894
 895         for ( id = bdb_idl_first( candidates, &cursor );
 896                 id != NOID && !no_sync_state_change;
 897                 id = bdb_idl_next( candidates, &cursor ) )
 898         {
 899                 int scopeok = 0;
 900
 901 loop_begin:
 902                 /* check for abandon */
 903                 if ( sop->o_abandon ) {
 904                         if ( sop != op ) {
 905                                 bdb_drop_psearch( sop, sop->o_msgid, 1 );
 906                         }
 907                         rs->sr_err = LDAP_SUCCESS;
 908                         goto done;
 909                 }
 910
 911                 if ( sop->o_cancel ) {
 912                         assert( sop->o_cancel == SLAP_CANCEL_REQ );
 913                         rs->sr_err = LDAP_CANCELLED;
 914                         send_ldap_result( sop, rs );
 915                         sop->o_cancel = SLAP_CANCEL_ACK;
 916                         rs->sr_err = LDAP_SUCCESS;
 917                         goto done;
 918                 }
 919
 920                 /* check time limit */
 921                 if ( sop->ors_tlimit != SLAP_NO_LIMIT
 922                                 && slap_get_time() > stoptime )
 923                 {
 924                         rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
 925                         rs->sr_ref = rs->sr_v2ref;
 926                         send_ldap_result( sop, rs );
 927                         rs->sr_err = LDAP_SUCCESS;
 928                         goto done;
 929                 }
 930
 931                 if (!IS_PSEARCH) {
 932 id2entry_retry:
 933                         /* get the entry with reader lock */
 934                         ei = NULL;
 935                         rs->sr_err = bdb_cache_find_id( op, ltid,
 936                                 id, &ei, 0, locker, &lock );
 937
 938                         if (rs->sr_err == LDAP_BUSY) {
 939                                 rs->sr_text = "ldap server busy";
 940                                 send_ldap_result( sop, rs );
 941                                 goto done;
 942
 943                         } else if ( rs->sr_err == DB_LOCK_DEADLOCK
 944                                 || rs->sr_err == DB_LOCK_NOTGRANTED )
 945                         {
 946                                 goto id2entry_retry;
 947                         }
 948
 949                         if ( ei && rs->sr_err == LDAP_SUCCESS ) {
 950                                 e = ei->bei_e;
 951                         } else {
 952                                 e = NULL;
 953                         }
 954
 955                         if ( e == NULL ) {
 956                                 if( !BDB_IDL_IS_RANGE(candidates) ) {
 957                                         /* only complain for non-range IDLs */
 958                                         Debug( LDAP_DEBUG_TRACE,
 959                                                 LDAP_XSTRING(bdb_search)
 960                                                 ": candidate %ld not found\n",
 961                                                 (long) id, 0, 0 );
 962                                 }
 963
 964                                 goto loop_continue;
 965                         }
 966                 } else {
 967                         e = ps_e;
 968                 }
 969
 970                 rs->sr_entry = e;
 971
 972 #ifdef BDB_SUBENTRIES
 973                 /* FIXME: send all but syncrepl */
 974 #if 0
 975                 if ( !is_sync_protocol( sop ) )
 976 #endif
 977                 {
 978                         if ( is_entry_subentry( e ) ) {
 979                                 if( sop->oq_search.rs_scope != LDAP_SCOPE_BASE ) {
 980                                         if(!get_subentries_visibility( sop )) {
 981                                                 /* only subentries are visible */
 982                                                 goto loop_continue;
 983                                         }
 984
 985                                 } else if ( get_subentries( sop ) &&
 986                                         !get_subentries_visibility( sop ))
 987                                 {
 988                                         /* only subentries are visible */
 989                                         goto loop_continue;
 990                                 }
 991
 992                         } else if ( get_subentries_visibility( sop )) {
 993                                 /* only subentries are visible */
 994                                 goto loop_continue;
 995                         }
 996                 }
 997 #endif /* BDB_SUBENTRIES */
 998
 999                 /* Does this candidate actually satisfy the search scope?
1000                  *
1001                  * Note that we don't lock access to the bei_parent pointer.
1002                  * Since only leaf nodes can be deleted, the parent of any
1003                  * node will always be a valid node. Also since we have
1004                  * a Read lock on the data, it cannot be renamed out of the
1005                  * scope while we are looking at it, and unless we're using
1006                  * BDB_HIER, its parents cannot be moved either.
1007                  */
1008                 switch( sop->ors_scope ) {
1009                 case LDAP_SCOPE_BASE:
1010                         /* This is always true, yes? */
1011                         if ( id == base.e_id ) scopeok = 1;
1012                         break;
1013
1014                 case LDAP_SCOPE_ONELEVEL:
1015                         if ( ei->bei_parent->bei_id == base.e_id ) scopeok = 1;
1016                         break;
1017
1018 #ifdef LDAP_SCOPE_CHILDREN
1019                 case LDAP_SCOPE_CHILDREN:
1020                         if ( id == base.e_id ) break;
1021                         /* Fall-thru */
1022 #endif
1023                 case LDAP_SCOPE_SUBTREE: {
1024                         EntryInfo *tmp;
1025                         for (tmp = BEI(e); tmp;
1026                                  tmp = tmp->bei_parent ) {
1027                                 if ( tmp->bei_id == base.e_id ) {
1028                                         scopeok = 1;
1029                                         break;
1030                                 }
1031                         }
1032                         } break;
1033                 }
1034
1035                 /* aliases were already dereferenced in candidate list */
1036                 if ( sop->ors_deref & LDAP_DEREF_SEARCHING ) {
1037                         /* but if the search base is an alias, and we didn't
1038                          * deref it when finding, return it.
1039                          */
1040                         if ( is_entry_alias(e) &&
1041                                 ((sop->ors_deref & LDAP_DEREF_FINDING) ||
1042                                         !bvmatch(&e->e_nname, &op->o_req_ndn)))
1043                         {
1044                                 goto loop_continue;
1045                         }
1046
1047                         /* scopes is only non-empty for onelevel or subtree */
1048                         if ( !scopeok && BDB_IDL_N(scopes) ) {
1049                                 unsigned x;
1050                                 if ( sop->ors_scope == LDAP_SCOPE_ONELEVEL ) {
1051                                         x = bdb_idl_search( scopes, e->e_id );
1052                                         if ( scopes[x] == e->e_id ) scopeok = 1;
1053                                 } else {
1054                                         /* subtree, walk up the tree */
1055                                         EntryInfo *tmp = BEI(e);
1056                                         for (;tmp->bei_parent; tmp=tmp->bei_parent) {
1057                                                 x = bdb_idl_search( scopes, tmp->bei_id );
1058                                                 if ( scopes[x] == tmp->bei_id ) {
1059                                                         scopeok = 1;
1060                                                         break;
1061                                                 }
1062                                         }
1063                                 }
1064                         }
1065                 }
1066
1067                 /* Not in scope, ignore it */
1068                 if ( !scopeok ) {
1069                         Debug( LDAP_DEBUG_TRACE,
1070                                 "bdb_search: %ld scope not okay\n",
1071                                 (long) id, 0, 0 );
1072                         goto loop_continue;
1073                 }
1074
1075                 /*
1076                  * if it's a referral, add it to the list of referrals. only do
1077                  * this for non-base searches, and don't check the filter
1078                  * explicitly here since it's only a candidate anyway.
1079                  */
1080                 if ( !manageDSAit && sop->oq_search.rs_scope != LDAP_SCOPE_BASE
1081                         && is_entry_referral( e ) )
1082                 {
1083                         BerVarray erefs = get_entry_referrals( sop, e );
1084                         rs->sr_ref = referral_rewrite( erefs, &e->e_name, NULL,
1085                                 sop->oq_search.rs_scope == LDAP_SCOPE_ONELEVEL
1086                                         ? LDAP_SCOPE_BASE : LDAP_SCOPE_SUBTREE );
1087
1088                         send_search_reference( sop, rs );
1089
1090                         ber_bvarray_free( rs->sr_ref );
1091                         ber_bvarray_free( erefs );
1092                         rs->sr_ref = NULL;
1093
1094                         goto loop_continue;
1095                 }
1096
1097                 if ( !manageDSAit && is_entry_glue( e )) {
1098                         goto loop_continue;
1099                 }
1100
1101                 /* if it matches the filter and scope, send it */
1102                 if (IS_PSEARCH) {
1103                         if (ps_type != LDAP_PSEARCH_BY_SCOPEOUT) {
1104                                 rs->sr_err = test_filter( sop, rs->sr_entry, &cookief );
1105                         } else {
1106                                 rs->sr_err = LDAP_COMPARE_TRUE;
1107                         }
1108
1109                 } else {
1110                         if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1111                                 rc_sync = test_filter( sop, rs->sr_entry, &cookief );
1112                                 rs->sr_err = test_filter( sop, rs->sr_entry, &contextcsnand );
1113                                 if ( rs->sr_err == LDAP_COMPARE_TRUE ) {
1114                                         if ( rc_sync == LDAP_COMPARE_TRUE ) {
1115                                                 if ( no_sync_state_change ) {
1116                                                         Debug( LDAP_DEBUG_TRACE,
1117                                                                 LDAP_XSTRING(bdb_search) ": "
1118                                                                 "error in context csn management\n",
1119                                                                 0, 0, 0 );
1120                                                 }
1121                                                 entry_sync_state = LDAP_SYNC_ADD;
1122
1123                                         } else {
1124                                                 if ( no_sync_state_change ) {
1125                                                         goto loop_continue;
1126                                                 }
1127                                                 entry_sync_state = LDAP_SYNC_PRESENT;
1128                                         }
1129                                 }
1130
1131                         } else {
1132                                 rs->sr_err = test_filter( sop,
1133                                         rs->sr_entry, sop->oq_search.rs_filter );
1134                         }
1135                 }
1136
1137                 if ( rs->sr_err == LDAP_COMPARE_TRUE ) {
1138                         /* check size limit */
1139                         if ( --sop->ors_slimit == -1 &&
1140                                 sop->o_sync_slog_size == -1 )
1141                         {
1142                                 if (!IS_PSEARCH) {
1143                                         bdb_cache_return_entry_r( bdb->bi_dbenv,
1144                                                 &bdb->bi_cache, e, &lock );
1145                                 }
1146                                 e = NULL;
1147                                 rs->sr_entry = NULL;
1148                                 rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1149                                 rs->sr_ref = rs->sr_v2ref;
1150                                 send_ldap_result( sop, rs );
1151                                 rs->sr_err = LDAP_SUCCESS;
1152                                 goto done;
1153                         }
1154
1155                         if ( get_pagedresults(sop) > SLAP_NO_CONTROL ) {
1156                                 if ( rs->sr_nentries >= sop->o_pagedresults_size ) {
1157                                         send_paged_response( sop, rs, &lastid, tentries );
1158                                         goto done;
1159                                 }
1160                                 lastid = id;
1161                         }
1162
1163                         if (e) {
1164                                 /* safe default */
1165                                 int result = -1;
1166
1167                                 if (IS_PSEARCH) {
1168                                         int premodify_found = 0;
1169                                         int entry_sync_state;
1170
1171                                         if ( ps_type == LDAP_PSEARCH_BY_ADD ||
1172                                                  ps_type == LDAP_PSEARCH_BY_DELETE ||
1173                                                  ps_type == LDAP_PSEARCH_BY_MODIFY ||
1174                                                  ps_type == LDAP_PSEARCH_BY_SCOPEOUT )
1175                                         {
1176                                                 if ( ps_type == LDAP_PSEARCH_BY_MODIFY ) {
1177                                                         struct psid_entry* psid_e;
1178                                                         LDAP_LIST_FOREACH( psid_e,
1179                                                                 &op->o_pm_list, ps_link)
1180                                                         {
1181                                                                 if( psid_e->ps_op == sop ) {
1182                                                                         premodify_found = 1;
1183                                                                         LDAP_LIST_REMOVE(psid_e, ps_link);
1184                                                                         break;
1185                                                                 }
1186                                                         }
1187                                                         if (psid_e != NULL) free (psid_e);
1188                                                 }
1189
1190                                                 if ( ps_type == LDAP_PSEARCH_BY_ADD ) {
1191                                                         entry_sync_state = LDAP_SYNC_ADD;
1192                                                 } else if ( ps_type == LDAP_PSEARCH_BY_DELETE ) {
1193                                                         entry_sync_state = LDAP_SYNC_DELETE;
1194                                                 } else if ( ps_type == LDAP_PSEARCH_BY_MODIFY ) {
1195                                                         if ( premodify_found ) {
1196                                                                 entry_sync_state = LDAP_SYNC_MODIFY;
1197                                                         } else {
1198                                                                 entry_sync_state = LDAP_SYNC_ADD;
1199                                                         }
1200                                                 } else if ( ps_type == LDAP_PSEARCH_BY_SCOPEOUT ) {
1201                                                         entry_sync_state = LDAP_SYNC_DELETE;
1202                                                 } else {
1203                                                         rs->sr_err = LDAP_OTHER;
1204                                                         goto done;
1205                                                 }
1206
1207                                                 if ( sop->o_sync_slog_size != -1 ) {
1208                                                         if ( entry_sync_state == LDAP_SYNC_DELETE ) {
1209                                                                 result = slap_add_session_log( op, sop, e );
1210                                                         } else {
1211                                                                 result = 1;
1212                                                         }
1213                                                 } else {
1214                                                         struct berval cookie;
1215                                                         slap_compose_sync_cookie( sop, &cookie,
1216                                                                 search_context_csn,
1217                                                                 sop->o_sync_state.sid,
1218                                                                 sop->o_sync_state.rid );
1219                                                         rs->sr_err = slap_build_sync_state_ctrl( sop,
1220                                                                 rs, e, entry_sync_state, ctrls,
1221                                                                 num_ctrls++, 1, &cookie );
1222                                                         if ( rs->sr_err != LDAP_SUCCESS ) goto done;
1223                                                         rs->sr_attrs = attrs;
1224                                                         rs->sr_ctrls = ctrls;
1225                                                         rs->sr_flags = 0;
1226                                                         result = send_search_entry( sop, rs );
1227                                                         if ( cookie.bv_val ) ch_free( cookie.bv_val );
1228                                                         sl_free( ctrls[num_ctrls-1]->ldctl_value.bv_val,
1229                                                                  sop->o_tmpmemctx );
1230                                                         sl_free( ctrls[--num_ctrls], sop->o_tmpmemctx );
1231                                                         ctrls[num_ctrls] = NULL;
1232                                                         rs->sr_ctrls = NULL;
1233                                                 }
1234
1235                                         } else if ( ps_type == LDAP_PSEARCH_BY_PREMODIFY ) {
1236                                                 struct psid_entry* psid_e;
1237                                                 psid_e = (struct psid_entry *) ch_calloc(1,
1238                                                         sizeof(struct psid_entry));
1239                                                 psid_e->ps_op = sop;
1240                                                 LDAP_LIST_INSERT_HEAD( &op->o_pm_list,
1241                                                         psid_e, ps_link );
1242
1243                                         } else {
1244                                                 Debug( LDAP_DEBUG_TRACE,
1245                                                         LDAP_XSTRING(bdb_search)
1246                                                         ": invalid ps_type (%d) \n",
1247                                                         ps_type, 0, 0);
1248                                         }
1249
1250                                 } else {
1251                                         if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1252                                                 if ( rc_sync == LDAP_COMPARE_TRUE ) { /* ADD */
1253                                                         rs->sr_err = slap_build_sync_state_ctrl( sop,
1254                                                                 rs, e, entry_sync_state, ctrls,
1255                                                                 num_ctrls++, 0, NULL );
1256                                                         if ( rs->sr_err != LDAP_SUCCESS ) goto done;
1257                                                         rs->sr_ctrls = ctrls;
1258                                                         rs->sr_attrs = sop->oq_search.rs_attrs;
1259                                                         rs->sr_flags = 0;
1260                                                         result = send_search_entry( sop, rs );
1261                                                         sl_free( ctrls[num_ctrls-1]->ldctl_value.bv_val,
1262                                                                  sop->o_tmpmemctx );
1263                                                         sl_free( ctrls[--num_ctrls], sop->o_tmpmemctx );
1264                                                         ctrls[num_ctrls] = NULL;
1265                                                         rs->sr_ctrls = NULL;
1266
1267                                                 } else { /* PRESENT */
1268                                                         if ( sync_send_present_mode ) {
1269                                                                 result = slap_build_syncUUID_set( sop,
1270                                                                         &syncUUID_set, e );
1271                                                                 if ( result <= 0 ) {
1272                                                                         result = -1;
1273                                                                 } else {
1274                                                                         syncUUID_set_cnt++;
1275                                                                         if ( syncUUID_set_cnt ==
1276                                                                                 SLAP_SYNCUUID_SET_SIZE )
1277                                                                         {
1278                                                                                 rs->sr_err = LDAP_SUCCESS;
1279                                                                                 rs->sr_rspoid = LDAP_SYNC_INFO;
1280                                                                                 rs->sr_ctrls = NULL;
1281                                                                                 result = slap_send_syncinfo( sop, rs,
1282                                                                                         LDAP_TAG_SYNC_ID_SET,
1283                                                                                         NULL, 0, syncUUID_set, 0 );
1284                                                                                 if ( result != LDAP_SUCCESS ) {
1285                                                                                         result = -1;
1286                                                                                 }
1287                                                                                 ber_bvarray_free_x( syncUUID_set,
1288                                                                                         sop->o_tmpmemctx );
1289                                                                                 syncUUID_set = NULL;
1290                                                                                 syncUUID_set_cnt = 0;
1291                                                                         }
1292                                                                 }
1293
1294                                                         } else {
1295                                                                 result = 1;
1296                                                         }
1297                                                 }
1298
1299                                         } else {
1300                                                 rs->sr_attrs = sop->oq_search.rs_attrs;
1301                                                 rs->sr_ctrls = NULL;
1302                                                 rs->sr_flags = 0;
1303                                                 rs->sr_err = LDAP_SUCCESS;
1304                                                 result = send_search_entry( sop, rs );
1305                                         }
1306                                 }
1307
1308                                 switch (result) {
1309                                 case 0:         /* entry sent ok */
1310                                         break;
1311                                 case 1:         /* entry not sent */
1312                                         break;
1313                                 case -1:        /* connection closed */
1314                                         if (!IS_PSEARCH) {
1315                                                 bdb_cache_return_entry_r(bdb->bi_dbenv,
1316                                                         &bdb->bi_cache, e, &lock);
1317                                         }
1318                                         e = NULL;
1319                                         rs->sr_entry = NULL;
1320                                         rs->sr_err = LDAP_OTHER;
1321                                         goto done;
1322                                 }
1323                         }
1324
1325                 } else {
1326                         Debug( LDAP_DEBUG_TRACE,
1327                                 LDAP_XSTRING(bdb_search)
1328                                 ": %ld does not match filter\n",
1329                                 (long) id, 0, 0 );
1330                 }
1331
1332 loop_continue:
1333                 if( e != NULL ) {
1334                         /* free reader lock */
1335                         if (!IS_PSEARCH) {
1336                                 bdb_cache_return_entry_r( bdb->bi_dbenv,
1337                                         &bdb->bi_cache, e , &lock );
1338                                 if ( sop->o_nocaching ) {
1339                                         bdb_cache_delete_entry( bdb, ei, locker, &lock );
1340                                 }
1341                         }
1342                         e = NULL;
1343                         rs->sr_entry = NULL;
1344                 }
1345
1346                 ldap_pvt_thread_yield();
1347         }
1348
1349         if ( syncUUID_set_cnt > 0 ) {
1350                 rs->sr_err = LDAP_SUCCESS;
1351                 rs->sr_rspoid = LDAP_SYNC_INFO;
1352                 rs->sr_ctrls = NULL;
1353                 slap_send_syncinfo( sop, rs, LDAP_TAG_SYNC_ID_SET,
1354                         NULL, 0, syncUUID_set, 0 );
1355                 ber_bvarray_free_x( syncUUID_set, sop->o_tmpmemctx );
1356                 syncUUID_set_cnt = 0;
1357         }
1358
1359 nochange:
1360         if (!IS_PSEARCH) {
1361                 if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1362                         if ( sop->o_sync_mode & SLAP_SYNC_PERSIST ) {
1363                                 struct berval cookie;
1364                                 slap_compose_sync_cookie( sop, &cookie, search_context_csn,
1365                                         sop->o_sync_state.sid, sop->o_sync_state.rid );
1366
1367                                 if ( sync_send_present_mode ) {
1368                                         rs->sr_err = LDAP_SUCCESS;
1369                                         rs->sr_rspoid = LDAP_SYNC_INFO;
1370                                         rs->sr_ctrls = NULL;
1371                                         slap_send_syncinfo( sop, rs,
1372                                                 LDAP_TAG_SYNC_REFRESH_PRESENT, &cookie, 1, NULL, 0 );
1373
1374                                 } else {
1375                                         if ( !no_sync_state_change ) {
1376                                                 int slog_found = 0;
1377                                                 ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
1378                                                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list,
1379                                                         o_ps_link )
1380                                                 {
1381                                                         if ( ps_list->o_sync_slog_size > 0 ) {
1382                                                                 if ( ps_list->o_sync_state.sid ==
1383                                                                         sop->o_sync_state.sid )
1384                                                                 {
1385                                                                         slog_found = 1;
1386                                                                         break;
1387                                                                 }
1388                                                         }
1389                                                 }
1390
1391                                                 if ( slog_found ) {
1392                                                         rs->sr_err = LDAP_SUCCESS;
1393                                                         rs->sr_rspoid = NULL;
1394                                                         rs->sr_ctrls = NULL;
1395                                                         slap_send_session_log( op, ps_list, rs );
1396                                                 }
1397                                                 ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
1398                                         }
1399
1400                                         rs->sr_err = LDAP_SUCCESS;
1401                                         rs->sr_rspoid = LDAP_SYNC_INFO;
1402                                         rs->sr_ctrls = NULL;
1403                                         slap_send_syncinfo( sop, rs,
1404                                                 LDAP_TAG_SYNC_REFRESH_DELETE, &cookie, 1, NULL, 0 );
1405                                 }
1406
1407                                 if ( cookie.bv_val ) ch_free( cookie.bv_val );
1408
1409                         } else {
1410                                 /* refreshOnly mode */
1411                                 struct berval cookie;
1412                                 slap_compose_sync_cookie( sop, &cookie, search_context_csn,
1413                                         sop->o_sync_state.sid, sop->o_sync_state.rid );
1414
1415                                 if ( sync_send_present_mode ) {
1416                                         slap_build_sync_done_ctrl( sop, rs, ctrls,
1417                                                 num_ctrls++, 1, &cookie, LDAP_SYNC_REFRESH_PRESENTS );
1418
1419                                 } else {
1420                                         if ( !no_sync_state_change ) {
1421                                                 int slog_found = 0;
1422                                                 ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
1423                                                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list,
1424                                                         o_ps_link )
1425                                                 {
1426                                                         if ( ps_list->o_sync_slog_size > 0 ) {
1427                                                                 if ( ps_list->o_sync_state.sid ==
1428                                                                                 sop->o_sync_state.sid ) {
1429                                                                         slog_found = 1;
1430                                                                         break;
1431                                                                 }
1432                                                         }
1433                                                 }
1434
1435                                                 if ( slog_found ) {
1436                                                         slap_send_session_log( op, ps_list, rs );
1437                                                 }
1438                                                 ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
1439                                         }
1440
1441                                         slap_build_sync_done_ctrl( sop, rs, ctrls,
1442                                                 num_ctrls++, 1, &cookie, LDAP_SYNC_REFRESH_DELETES );
1443                                 }
1444
1445                                 rs->sr_ctrls = ctrls;
1446                                 rs->sr_ref = rs->sr_v2ref;
1447                                 rs->sr_err = (rs->sr_v2ref == NULL)
1448                                         ? LDAP_SUCCESS : LDAP_REFERRAL;
1449                                 rs->sr_rspoid = NULL;
1450                                 send_ldap_result( sop, rs );
1451                                 if ( ctrls[num_ctrls-1]->ldctl_value.bv_val != NULL ) {
1452                                         sl_free( ctrls[num_ctrls-1]->ldctl_value.bv_val,
1453                                                 sop->o_tmpmemctx );
1454                                 }
1455                                 sl_free( ctrls[--num_ctrls], sop->o_tmpmemctx );
1456                                 ctrls[num_ctrls] = NULL;
1457                                 if ( cookie.bv_val ) ch_free( cookie.bv_val );
1458                         }
1459
1460                 } else {
1461                         rs->sr_ctrls = NULL;
1462                         rs->sr_ref = rs->sr_v2ref;
1463                         rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS : LDAP_REFERRAL;
1464                         rs->sr_rspoid = NULL;
1465                         if ( get_pagedresults(sop) > SLAP_NO_CONTROL ) {
1466                                 send_paged_response( sop, rs, NULL, 0 );
1467                         } else {
1468                                 send_ldap_result( sop, rs );
1469                         }
1470                 }
1471         }
1472
1473         rs->sr_err = LDAP_SUCCESS;
1474
1475 done:
1476         if( !IS_PSEARCH && e != NULL ) {
1477                 /* free reader lock */
1478                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
1479         }
1480
1481         if ( !opinfo )
1482                 LOCK_ID_FREE( bdb->bi_dbenv, locker );
1483
1484         ber_bvfree( search_context_csn );
1485
1486         if( rs->sr_v2ref ) {
1487                 ber_bvarray_free( rs->sr_v2ref );
1488                 rs->sr_v2ref = NULL;
1489         }
1490         if( realbase.bv_val ) ch_free( realbase.bv_val );
1491
1492         return rs->sr_err;
1493 }
1494
1495
1496 static int base_candidate(
1497         BackendDB       *be,
1498         Entry   *e,
1499         ID              *ids )
1500 {
1501         Debug(LDAP_DEBUG_ARGS, "base_candidates: base: \"%s\" (0x%08lx)\n",
1502                 e->e_nname.bv_val, (long) e->e_id, 0);
1503
1504         ids[0] = 1;
1505         ids[1] = e->e_id;
1506         return 0;
1507 }
1508
1509 /* Look for "objectClass Present" in this filter.
1510  * Also count depth of filter tree while we're at it.
1511  */
1512 static int oc_filter(
1513         Filter *f,
1514         int cur,
1515         int *max )
1516 {
1517         int rc = 0;
1518
1519         assert( f );
1520
1521         if( cur > *max ) *max = cur;
1522
1523         switch( f->f_choice ) {
1524         case LDAP_FILTER_PRESENT:
1525                 if (f->f_desc == slap_schema.si_ad_objectClass) {
1526                         rc = 1;
1527                 }
1528                 break;
1529
1530         case LDAP_FILTER_AND:
1531         case LDAP_FILTER_OR:
1532                 cur++;
1533                 for ( f=f->f_and; f; f=f->f_next ) {
1534                         (void) oc_filter(f, cur, max);
1535                 }
1536                 break;
1537
1538         default:
1539                 break;
1540         }
1541         return rc;
1542 }
1543
1544 static void search_stack_free( void *key, void *data )
1545 {
1546         ber_memfree_x(data, NULL);
1547 }
1548
1549 static void *search_stack( Operation *op )
1550 {
1551         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
1552         void *ret = NULL;
1553
1554         if ( op->o_threadctx ) {
1555                 ldap_pvt_thread_pool_getkey( op->o_threadctx, search_stack,
1556                         &ret, NULL );
1557         } else {
1558                 ret = bdb->bi_search_stack;
1559         }
1560
1561         if ( !ret ) {
1562                 ret = ch_malloc( bdb->bi_search_stack_depth * BDB_IDL_UM_SIZE
1563                         * sizeof( ID ) );
1564                 if ( op->o_threadctx ) {
1565                         ldap_pvt_thread_pool_setkey( op->o_threadctx, search_stack,
1566                                 ret, search_stack_free );
1567                 } else {
1568                         bdb->bi_search_stack = ret;
1569                 }
1570         }
1571         return ret;
1572 }
1573
1574 static int search_candidates(
1575         Operation *stackop,
1576         Operation *op,
1577         SlapReply *rs,
1578         Entry *e,
1579         u_int32_t locker,
1580         ID      *ids,
1581         ID      *scopes )
1582 {
1583         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
1584         int rc, depth = 1;
1585         Filter          f, rf, xf, nf;
1586         ID              *stack;
1587         AttributeAssertion aa_ref;
1588 #ifdef BDB_SUBENTRIES
1589         Filter  sf;
1590         AttributeAssertion aa_subentry;
1591 #endif
1592
1593         /*
1594          * This routine takes as input a filter (user-filter)
1595          * and rewrites it as follows:
1596          *      (&(scope=DN)[(objectClass=subentry)]
1597          *              (|[(objectClass=referral)(objectClass=alias)](user-filter))
1598          */
1599
1600         Debug(LDAP_DEBUG_TRACE,
1601                 "search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
1602                 e->e_nname.bv_val, (long) e->e_id, op->oq_search.rs_scope );
1603
1604         xf.f_or = op->oq_search.rs_filter;
1605         xf.f_choice = LDAP_FILTER_OR;
1606         xf.f_next = NULL;
1607
1608         /* If the user's filter uses objectClass=*,
1609          * these clauses are redundant.
1610          */
1611         if (!oc_filter(op->oq_search.rs_filter, 1, &depth)
1612                 && !get_subentries_visibility(op)
1613                 && !is_sync_protocol(op) )
1614         {
1615                 if( !get_manageDSAit(op) && !get_domainScope(op) ) {
1616                         /* match referral objects */
1617                         struct berval bv_ref = BER_BVC( "referral" );
1618                         rf.f_choice = LDAP_FILTER_EQUALITY;
1619                         rf.f_ava = &aa_ref;
1620                         rf.f_av_desc = slap_schema.si_ad_objectClass;
1621                         rf.f_av_value = bv_ref;
1622                         rf.f_next = xf.f_or;
1623                         xf.f_or = &rf;
1624                         depth++;
1625                 }
1626         }
1627
1628         f.f_next = NULL;
1629         f.f_choice = LDAP_FILTER_AND;
1630         f.f_and = &nf;
1631         /* Dummy; we compute scope separately now */
1632         nf.f_choice = SLAPD_FILTER_COMPUTED;
1633         nf.f_result = LDAP_SUCCESS;
1634         nf.f_next = ( xf.f_or == op->oq_search.rs_filter )
1635                 ? op->oq_search.rs_filter : &xf ;
1636         /* Filter depth increased again, adding dummy clause */
1637         depth++;
1638
1639 #ifdef BDB_SUBENTRIES
1640         if( get_subentries_visibility( op ) ) {
1641                 struct berval bv_subentry = BER_BVC( "subentry" );
1642                 sf.f_choice = LDAP_FILTER_EQUALITY;
1643                 sf.f_ava = &aa_subentry;
1644                 sf.f_av_desc = slap_schema.si_ad_objectClass;
1645                 sf.f_av_value = bv_subentry;
1646                 sf.f_next = nf.f_next;
1647                 nf.f_next = &sf;
1648         }
1649 #endif
1650
1651         /* Allocate IDL stack, plus 1 more for former tmp */
1652         if ( depth+1 > bdb->bi_search_stack_depth ) {
1653                 stack = ch_malloc( (depth + 1) * BDB_IDL_UM_SIZE * sizeof( ID ) );
1654         } else {
1655                 stack = search_stack( stackop );
1656         }
1657
1658         if( op->ors_deref & LDAP_DEREF_SEARCHING ) {
1659                 rc = search_aliases( op, rs, e, locker, ids, scopes, stack );
1660         } else {
1661                 rc = bdb_dn2idl( op, e, ids, stack );
1662         }
1663
1664         if ( rc == LDAP_SUCCESS ) {
1665                 rc = bdb_filter_candidates( op, &f, ids,
1666                         stack, stack+BDB_IDL_UM_SIZE );
1667         }
1668
1669         if ( depth+1 > bdb->bi_search_stack_depth ) {
1670                 ch_free( stack );
1671         }
1672
1673         if( rc ) {
1674                 Debug(LDAP_DEBUG_TRACE,
1675                         "bdb_search_candidates: failed (rc=%d)\n",
1676                         rc, NULL, NULL );
1677
1678         } else {
1679                 Debug(LDAP_DEBUG_TRACE,
1680                         "bdb_search_candidates: id=%ld first=%ld last=%ld\n",
1681                         (long) ids[0],
1682                         (long) BDB_IDL_FIRST(ids),
1683                         (long) BDB_IDL_LAST(ids) );
1684         }
1685
1686         return rc;
1687 }
1688
1689 static void
1690 send_paged_response(
1691         Operation       *op,
1692         SlapReply       *rs,
1693         ID              *lastid,
1694         int             tentries )
1695 {
1696         LDAPControl     ctrl, *ctrls[2];
1697         BerElementBuffer berbuf;
1698         BerElement      *ber = (BerElement *)&berbuf;
1699         PagedResultsCookie respcookie;
1700         struct berval cookie;
1701
1702         Debug(LDAP_DEBUG_ARGS,
1703                 "send_paged_response: lastid=0x%08lx nentries=%d\n",
1704                 lastid ? *lastid : 0, rs->sr_nentries, NULL );
1705
1706         BER_BVZERO( &ctrl.ldctl_value );
1707         ctrls[0] = &ctrl;
1708         ctrls[1] = NULL;
1709
1710         ber_init2( ber, NULL, LBER_USE_DER );
1711
1712         if ( lastid ) {
1713                 respcookie = ( PagedResultsCookie )(*lastid);
1714                 cookie.bv_len = sizeof( respcookie );
1715                 cookie.bv_val = (char *)&respcookie;
1716
1717         } else {
1718                 respcookie = ( PagedResultsCookie )0;
1719                 BER_BVSTR( &cookie, "" );
1720         }
1721
1722         op->o_conn->c_pagedresults_state.ps_cookie = respcookie;
1723         op->o_conn->c_pagedresults_state.ps_count =
1724                 op->o_pagedresults_state.ps_count + rs->sr_nentries;
1725
1726         /* return size of 0 -- no estimate */
1727         ber_printf( ber, "{iO}", 0, &cookie );
1728
1729         if ( ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 ) == -1 ) {
1730                 goto done;
1731         }
1732
1733         ctrls[0]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
1734         ctrls[0]->ldctl_iscritical = 0;
1735
1736         rs->sr_ctrls = ctrls;
1737         rs->sr_err = LDAP_SUCCESS;
1738         send_ldap_result( op, rs );
1739         rs->sr_ctrls = NULL;
1740
1741 done:
1742         (void) ber_free_buf( ber );
1743 }
1744